Concept for a federated example

Local:

User client (Rosetta, Code, Terminal, ...)

Remote_0:

Fuseki instance

Remote_1:

Heterogeneous data source vault (tabular)

Remote_2:

Heterogeneous data source (other)

Visual

sequenceDiagram
    Local->>+Remote_1: SPARQL Query
    Note over Local,Remote_1: TODO INSERT Query
    opt Remote data
        Remote_1->>+Remote_2: SPARQL Data SubQuery
        Remote_2-->>-Remote_1: SubQuery Data
    end
    Remote_1-->>-Local: Query Data
    Note over Remote_1,Local: TODO INSERT Data